CWE-366Race Condition within a Thread

Description

If two threads of execution use a resource simultaneously, there exists the possibility that resources may be used while invalid, in turn making the state of execution undefined.

Common consequences

• Integrity,Other→Alter Execution Logic,Unexpected State
  The main problem is that -- if a lock is overcome -- data could be altered in a bad state.

Potential mitigations

• Architecture and Design
  Use locking functionality. This is the recommended solution. Implement some form of locking mechanism around code which alters or reads persistent data in a multithreaded environment.
• Architecture and Design
  Create resource-locking validation checks. If no inherent locking mechanisms exist, use flags and signals to enforce your own blocking scheme when resources are being used by other threads of execution.

Related CWEs

Recent CVEs classified under this CWE